Lock.



J. BELLEY.

LOCK.

APPLICATION FILED AUG. I5. 1916.

Patented Dec. 19, 1916.

2 SHEETS-$HEET 1.

INVENTOR.

VMATTORNEY J. BELLEY.

LOCK. APPLICATION FILED AUG.I5. 1916.

1,209,383 Patented Dec. 19, 1916.

2 SHEETSSHEET 2.

IN V EN TOR. WITNESS ENT -FI@E.

J OHN IBELLEY, OF PASSAIG, NEW JERSEY, ASSIGNOR OF ONE-HALF TO PAULMILLER, OF NEWARK, NEW JERSEY.

LOCK.

To all whom it may concern.-

Be it known that I, JOHN BELLEY, a citizen of the United States, and aresident of Passaio, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Locks, of which thefollowing is a specification.

The present invention relates to looks or latches for securing doors andother parts.

One of the objects of the invention is to provide, in a latch of simpleconstruction, means whereby the bolt may be held in its projectedposition when the door is closed and in retracted position when the dooris open, the bolt being shot into place by the operation of closing thedoor.

Another object of the invention is to produce a latch, the bolt of whichis combined with a dead-locking member that can be actuated from theoutside by a key and from the inside by a slide.

A further object of the invention is to devise a latch or look that canbe manufactured on a commercial scale, or in other words one which isnot so difficult to pro duce as to be beyond the reasonable cost of suchan article.

With these and other objects in view, which will more fully appear asthe nature of the invention is better understood, the same consists inthe combination, arrangement, and construction of parts hereinafterdescribed, pointed out in the appended claims and illustrated in theaccompanying drawings, it being understood that many changes may be madein the size and proportion of the several parts and details ofconstruction within the scope of the appended claims without departingfrom the spirit or sacrificing any of theadvantages of the invention.

One of the many possible embodiments of the invention is illustrated inthe accompanying drawings, in which:

Figure 1 represents a view of the inside of a door and j amb providedwith a latch constructed in accordance with this invention; Fig. 2 is asimilar view, partly in section, the inner escutcheon plate beingremoved to more clearly show the interior construction of the latch;Fig. 3 is a section taken on line 3-3 of Fig. 2; Fig. 4 is ,a sectiontaken on line 4-4 of Fig. 2; Fig. 5 is a view similar to illu trated inFig. 2 with Specification of Letters Patent.

Application filed August 15, 1916.

Patented Dec. 19, 1916.

Serial No. 115,000.

the dead-locking member in its operative positlon; Fig. 6 is a viewsimilar to that shown in Fig. 4 with the elements in other positlons;Fig. 7 is a vertical longitudinal section taken through the bolt casingof the latch; Fig. 8 is a section taken on line 88 of Fig. 7 Fig. 9 is asection taken on line 9-9 of Fig. 7 and Fig. '10 is a perspective viewof the sliding bolt of the latch.

In the drawings, the numeral 11 indicates a'latch casing, which is oftubular configuration, its front end 12 being open and its rear end 13closed. The front end of the casing is provided with a flange 14, havingholes 15 extending therethrough. The casing is inserted into acylindrical bore 16 in the door 17 said bore extending horizontally inparallel relation'to the inner face of the door. The flange 14 isdisposed in a suitably shaped recess 18 in the door, said recess beingformed in that edge of the door which abuts against the door-jamb 19.The casing is held within the bore by screws 20, passing through theholes 15 in the flange 14. In the casing 11. is slidably disposed acylindrical latch bolt 21, fitting snugly the said casing. This bolt isprovided with a lug 22, projecting through a longitudinal slot 23 inthe'casing and through an aperture 24 in an actuating lever 25. Thislever is disposed within a mortise 26 in the door, and is carried by aknob-spindle 27, that is provided with a substantially square portion,extending through a similarly shaped opening 28 in the actuating lever.The knobspindle'is disposed at right angles to the longitudinal axis ofthe latch casing 11, extends through the door and also throughescutcheon plates 29 and 30. Knobs 31 are associated with the spindlefor the wellknown purpose. The outer escutcheon plate, that is plate 29,has, preferably, made integral therewith screw-threaded nuts 32, whichare located in recesses in the outer face of the door, and with thesenuts mesh those of screw bolts 33, that extend through the innerescutcheon plate 30, their heads 34 abutting against the inner face ofthe last named escutcheon plate..

In the casing 11 is arranged behind the bolt 21 a spring 35, which has atendency to project the said bolt into a keeper 36, located within arecess 37 in the door-jamb. For the purpose of keeping the bolt in itsthe said detent into a notch 41 in the casing,

thereby bringing it in front of the bolt 21 when the latter is retractedand keeping the said bolt in such position. The detent has an extension42, which is, when the door is in its closed position, located withinthe recess 18, but is adapted to be projected 5 through a slot 43 in thedoor beyond the outer face of the latter to strike against a ledge 44upon the jamb 19, for a purpose hereinafter to be fully described.

WVith the actuating lever 25 is adapted to 25 cooperate a dead-lockingmember 45, that is slidably mounted upon the escutcheon plate and isdisposed within the mortise 26 in the door. This dead-locking member-is.attached to a pin 46, which projects through 25 a vertically arrangedslot 47 in the escutcheon plate 30 and carries on its outer end a plate48, serving as a guide for the dead locking member. The free end of thepin is made in the form of a knob 49, to facili- 30 tate the operationof the dead-locking mem ber. In its inoperative position, thedeadlocking member is held out of the path of the actuating lever 25, asclearly shown in Fig. 2 of the drawings. If it is, however, shifteddownward, it abuts against the said actuating lever and prevents thelatter from being oscillated by the aid of the knobs 31 For the purposeof operating the dead-locking member from the outside of the door, a keyis used. This key is inserted through a keyhole 50 in the escutcheonplate 29, said keyhole being in alinement with a transverse recess 51 inthe door. The bit of the key is adapted to engage the dead-lockingmember 45, which is provided for this purpose with shoulders 52. Ininserting the key, it's pin reaches into a hole 53 in the escutcheonplate 30. lVith this hole is associated a keyhole guard 54, comprising aplate that is pivoted at 55 to the escutcheon plate 30 and provided witha thumb-bit 56. lVhen this guard abuts against the plate 48 (Fig. 1'),the key cannot be inserted into the lock. From the inner face of the'es-55 cutcheon plate 30 project into the mortise 26 studs 57, correspondingto the notches in the key-pit and serving to prevent a turning of animproper key.

The operation of this device is as follows: hen the door is in itsclosed position, the detent 38 is in the position shown in Fig. 4 of thedrawings, in which its extension 42 abuts against the ledge 44 of thedoor-jamb, holding the spring 40 compressed. If the dead-locking member415 is in its inoperative position (Fig. 2), the bolt 21 can beretracted from the keeper from either side of the door by turning therespective knob 31 in the proper direction. When the bolt has beenretracted and the door opened, the spring 40. forces the detent into thenotch 41 in the casing 11 (Fig. 6), thereby keeping the bolt retracted.In closing the door, the extension 42 strikes against the door-jam withthe result that 7 the detent is unseated from the notch 41 in the casing(Fig. 2), permit-ting the spring 35. to. act and to, project the boltinto the keeper.

The dead-locking member may be brought 0 into its. operative position(Fig. 5) from the inside of the door by taking hold of the knob 49 andshifting it downward as far as the slot 47 will permit. If the parts arein these positions the door can be opened 35 from the outside by the useof a proper key only. In turning this. key its bit is brought intoengagement with one of the shoulders 52 of the dead-locking memberraising the latter as its rota-tion is being completed. After this thedoor is opened in the manner above described. If it is in,- tended toprevent the insertion of a key into the door, the keyhole guard 54 isbrought into the position shown in Fig.v 1 of the 5 drawings. Thedead-locking member is adapted to be brought intoits operative positionfrom the outside of the door by turning the proper key in a directionopposite to the one in which it is rotated. in unlocking the door.

What I claim is:

1. In a latch, the combination with a casing, of a spring-actuated bolttherein,

a knob-spindle oscillatably mounted in proximity of said casing, anactuating lever carried by said spindle and. pivo-tally con- 7 nectedwith said bolt for retracting the same, a spring-pressed detentextending in a plane at right angles to the longitudinal V axis of said;bolt for holding the latter retracted against the act-ion of the springcooperating with said bolt, said detent having an extension adapted; toproject beyond one of the faces of the door and to strike 15 against thedoor-jamb, wherebysaid detent is disengaged from said bolt upon closingthe door, a dead-locking member shiftably arranged upon, the door adatied to be brought into contact with said lgver to prevent; a motion ofthe. latter, said member having shoulders adapted, to be engaged by akey from the outside of the door, and

a knob upon the inner face of the door for manually controlling saidmember from the 25 inside.

2. Inv a latch, the combination" with a casing, of a spring-actuatedbolt;therein, a lmob-spindle oscillatably mounted in=proxim tyof; saidcasing. as M lei g, e er 13o carried by said spindle and pivotallyconside of the door, and a knob upon the inner nected with said bolt forretracting the same, face of the door for manually controlling adead-locking member shiftably arranged said member from the inside. 10upon the door adapted to be brought into Signed at New York, in thecounty of contact With said lever to prevent a motion New York, andState of New York, this of the latter, said member having shoulders 18thday of July, A. D., 1916.

adapted to be engaged by a key from the out- JOHN BELLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

